Method and apparatus for drying and incineration of sewage sludge
CA 2437509 A1 · Owner: Promuto, Vincent · Inventors: Promuto, Vincent
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
a system for drying sludge includes a shaftless spiral feed for moving sludge through a drying chamber. A high energy inductor is located at an output of the drying chamber for drawing hot gases through the chamber to dry the sludge as it advances from the input end to the output end of the chamber. The high energy inductor also aspirates the dried sludge from the chamber. The drying system can be used in conjunction with a waste-to-energy furnace for incineration of sludge and municipal waste. In such an arrangement the dried , sludge can be aspirated from the drying chamber directly into a combustion zone of the furnace. Hot gases from the furnace can be used in drying the sludge.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed December 20, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 20, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 20, 2023.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.